diff --git a/Makefile b/Makefile
index a7d89ca..78be47c 100644
--- a/Makefile
+++ b/Makefile
@@ -35,7 +35,7 @@ zip:
 		done
 	
 	@echo "compressing js..."
-	@java -jar build/yuicompressor-2.4.2.jar -o build/fullcalendar/fullcalendar.min.js build/fullcalendar/fullcalendar.js
+	@java -jar build/compiler.jar --js build/fullcalendar/fullcalendar.js > build/fullcalendar/fullcalendar.min.js
 	
 	@echo "building examples..."
 	@for f in build/fullcalendar/examples/*.html; do\
diff --git a/build/compiler.jar b/build/compiler.jar
new file mode 100644
index 0000000..7374f2d
Binary files /dev/null and b/build/compiler.jar differ
diff --git a/build/yuicompressor-2.4.2.jar b/build/yuicompressor-2.4.2.jar
deleted file mode 100644
index c29470b..0000000
Binary files a/build/yuicompressor-2.4.2.jar and /dev/null differ
diff --git a/src/misc/head.txt b/src/misc/head.txt
index e6ef145..c586499 100644
--- a/src/misc/head.txt
+++ b/src/misc/head.txt
@@ -1,4 +1,5 @@
-/*!
+/**
+ * @preserve
  * FullCalendar
  * http://arshaw.com/fullcalendar/
  *